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J. HUBER AND M. c. lNDAHL.-' AUFOMATI'G CONTROL FOB CABLE DRUMS OF MINE ANCHOR-S.

APPLICATION FILED 0CT. 23, l917- 1,314,660.) ,Pate ntedSeptl2,1919.

2 SHEETS-SHEET 1.

' Jnben fez THE COLUMBIA PMNOGRAPH cm. WASHIQIUTON. 0. c.

J. HUBER AND M. C. INDAHL.

AUTOMATIC CONTROL FOR CABLE DRUMS OF MINE ANCHOBS.

APPLICATION FILED 0CT.23| I917- Patented Sept. 2, 1919.

2 SHEETSSHEET 2.

LHU ll l m n 0' v n 3 'rnncnumam PLANognAPu c0., WASHINGTON, D. cv

water.

UNITED s ATns PATENT oFFIoE.

JAMES HUBER AND MAURITZ G. INDAI-IL, 0F PHILADELPHIA, PENNSYLVANIA; SAID HUBER ASSIGNOR OF HIS RIGHT TO VICKERS LIMITED, OFWESTMINSTER, LONDON,

ENGLAND. v j

7 AUTOMATIC coivrnor. FOR

To all whom it majconaern:

Be it known that we, JAMns HUBER, a cit zen of Sw1tzerland, and MAURITZ C. IN-

'DAHL, a citizen of the United States, both residing at Philadelphia,- county ,of Philadelphia, and State of Pennsylvania, have invented certainnew and useful Improvements in Automatic Controls for Cable- Drums of Mine-Anchors and We do hereby declare the following to be a full, clear, and

exact description of the invention, such as pulley moves to. and fro on the shaft'6. This mooring cable '9 extends upwardly through will enable others skilled in the art to which it appertains to make and use the same.

This invention'relates to a device for automatically controlling the rotation of the cable drum of'a mine anchor. q

The primary object of theinvention re sides in the provision of a device by means of which the mooring cable will be permitted to pay out evenly from the cable drum dur-' ing all conditions oflaunching andduring the subsequent descent of the anchor in the A further object of the invention resides in so constructing the device that the sudden strains to which the mooring cable is subjected willnot be permitted to break the cable while on the other hand the device will operate in such a manner that the-cable I will be relieved of the strains withoutcausing the mine to be dragged down the anchor duringthe descent of the latter. I

With these and other objects in view, such as will appear as the description progresses, the invention comprises the combination and arrangement of parts as set forth in'and fol-j lowing within the scope of the appended claims.

In the drawing:

Figure 1 is a fragmental sectional view of a mine anchor showing a portion of a mine in place thereon and showing the manner in which the invention is associated with the mine anchor;

Fig. 2 is a fragmental view looking at right-angles of Fig. 1;

Fig. 3 is a detail ofthe brake operating mechanism; and

Fig. 4 is a fragmental plan view! with parts thereof broken away.

In the drawing which illustrates one form of the invention a mine anchor l'on which is supported the usual mine 2 is illustrated. This anchor includes the "usual cable dram Specification of Letters Patent. Patented Sept. 2, 1919. Application filed October 22, 1917. Serial No. 198,163. I

:3 mounted on supports 4. Pivote'd on the supports 4 and extending outwardly there- .fromis a pair of levers 5 between which a shaft 6 extends. The pulley 7 is mounted on this shaft Gand is free to rotate and move "longitudinally thereon. A guard 8 surrounds a portionof this pulley 7 and moves therewith longitudinally of the shaft. This guardS is for thepurpose of preventing the mooring cable 9, which passes around ,the pulley, from riding on of the latter as the and the guidepulley movable, lies in the fact that the air is permitted to escape from the anchor'more'slowly than where the fair lead is movable in a slot to adjust itself to the unwinding of'the cable. Thus the anchor will be permitted to descend more gradually with the stationary fair lead. 1

. Pivoted on the extended end of the shaft 6 is'a rod 11 which is,'at 12, pivoted to a brake lever 13. This 'brakelever 13 is 'fulcrumed at 14 on, abracket 15, the latter being carried by one ofthe supports'4. A hand brake 16 is connected to the ends of the lever 13 at 12 and 16' and passes around a brake drum 17 formed onone flange of the cable drum 3. The arrangement of the levers 5, the rod 11 and the brake is such that when the levers and rod move downwardly the brake isapplied and conversely the brake is relieved when the levers 5 move upwardly.

In order that the brake may be applied with a predetermined force, normally, a spring 18 is secured at 19 to the bottom of the mine anchor and, at 20, to one of the levers 5. The upward movement of the levers against the tension of the spring 18 is limited by a pair of stops 21 which are carried by the supports 4.

It will thus be seen that inasmuch as the spring 18 will exert a predetermined breaking force on the cable drum the cable will pay out from the drum against this braking force and will thus be caused to unwind to. the anchor.

anchor, which latter includes a cable drum,

evenly either during the launching of the mine or during its subsequent descent in the water, -Further nore should the cable be sudd n y. subjected to a. g eater. rain th 7 the descent: of the latter.

distance between theaXis of: the drum and the point where the cable leaves the drum decreases, or in other words as .the leverage decreases. 7

There has been described but one embodiment. of the present invention. but'it is of course to be understoodthat, variousmodifications may be mtade without, departing from the invention as it is not essential whether the brake be-of the band type orofv the shoe type, or whether the spring be an expansion type or of the compression type.

What is claimed is:

1. The combination with a mine and its anchor which latter includes a cable drum," voi means tending to resist the separation of the same with a, predetermined force, said, means being operated, automatically, to de-:

crease said force when undue strains are applied to the mooring cable.

2. The combination with a mlne and 1ts of means for braking the latter, the effectiveness of, said. means being decreased, auto matically, by the mooring cable when thestrains on the latter. increase.

The result is that themine; will not be dragged down by the anchor in The arrangement, of the brake for the drum in the manner; set forth, in this, specification also insures the:' automatic adjustment of the brake'asthe 3. The combination with a mine and its anchor, which latter includes a cable drum,

of a brake for the latter and resilient means for applying the brake, saidmeans being controlled by the mooring cable.

4. The combination with a mine and its anchor, which latter includes a mooring cable drum, of a lever extending beyond the periphery of the drum, a pulley carried thereby, the mooring cable passing over said pulley, a brake for the drum operated by the cable and resilient means tending to move thelever in such a direction as to apply the brake, the force on the cable tending to move th'elev'er in the oppositedirection to release the brake.

'5. The combination with a mine and its anchor, which latter includes a cable drum, a'pulle'y mounted on a movable support over which pulley the mooring cable passes to form a loop, a brake for the drum operated by the movement of the pulley support, and resilient means for moving the support in one direction to apply the brake, the straighteningof the loop in the cable tendingto move the support in the opposite direction to release the brake.

6 Thecombinationwith a mine and its anchor, which latter includes a mooring cable drum, of a brake therefor, and means for applying the brake, the force tending to separate the mine and anchor being operative to release the brake.

'7. The combination with a mine and its anchor, which latter includes a mooring cable drum, of a brake therefor, and resilient means for applying the brake, the force tending to separate the anchor from the mine being operative to release the brake as it overcomes the force of the aforementioned resilient means. a

In testimony whereof we afiix our s1gna- Copies of this p atent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .'D Q. i 7 

